Abstract
Drop-and-place aims at delivering the building blocks of microstructures using colloidal droplets as carrying medium; this approach combines the merits of pick-and-place and self-assembly. Among contemporary techniques used for drop generation, pulsed electrohydrodynamic (EHD) jetting is the only one which can produce on-demand drops with dimensions at least one-order-of-magnitude smaller than the nozzle. Here, we report an experimentally validated model for externally pulsed EHD jetting, and the application of this model in the drop-and-place of an array of colloidal particles. We show that the flow rate is limited by viscous drag in a thin nozzle, which leads to intrinsic pulsations of the conejet. We demonstrate that millimeter-scale nozzles can be utilized to achieve micron-scale positioning accuracy and single-particle dosing accuracy.
Original language | English (US) |
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Pages | 872 |
Number of pages | 1 |
State | Published - 2005 |
Event | 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States Duration: Oct 30 2005 → Nov 4 2005 |
Other
Other | 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase |
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Country/Territory | United States |
City | Cincinnati, OH |
Period | 10/30/05 → 11/4/05 |
All Science Journal Classification (ASJC) codes
- General Engineering